diff --git a/build-constraints.yaml b/build-constraints.yaml
index 8c03838a..daf3df30 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4899,6 +4899,9 @@ packages:
       # https://github.com/ekmett/compensated/issues/8
       - log-domain < 0.13
 
+      # https://github.com/commercialhaskell/stackage/issues/4992
+      - swagger2 < 2.5
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of